US4436781A - Centrifugally cast pole comprised of a reinforced resin for supporting a light or the like upon an end thereof - Google Patents

Centrifugally cast pole comprised of a reinforced resin for supporting a light or the like upon an end thereof Download PDF

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Publication number
US4436781A
US4436781A US06/395,230 US39523082A US4436781A US 4436781 A US4436781 A US 4436781A US 39523082 A US39523082 A US 39523082A US 4436781 A US4436781 A US 4436781A
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US
United States
Prior art keywords
pole
synthetic resin
mat
wire cloth
fibrous material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/395,230
Other languages
English (en)
Inventor
Bruno Rother
Hartmut Trommen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
G A PFLEIDERER GmbH and Co KG
Original Assignee
G A PFLEIDERER GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by G A PFLEIDERER GmbH and Co KG filed Critical G A PFLEIDERER GmbH and Co KG
Application granted granted Critical
Publication of US4436781A publication Critical patent/US4436781A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/116—Fixing lighting devices to arms or standards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/887—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced locally reinforced, e.g. by fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0809—Fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • B29K2105/128—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles in the form of a mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
    • B29K2305/08—Transition metals
    • B29K2305/12—Iron
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2915—Rod, strand, filament or fiber including textile, cloth or fabric

Definitions

  • the present invention relates to a centrifugally cast, reinforced synthetic resin pole, particularly a pole with a reinforcement comprising a mat permeable by the synthetic resin and having a specific gravity slightly lower than the specific gravity of the synthetic resin and comprising an inner layer of fibers oriented in the longitudinal direction of the pole.
  • Such poles are commonly encircled at the top end thereof by a pipe-shaped base of a lamp or of a lamp extension arm or by a collar band for clamping the lamp or extension arm to the pole.
  • a pipe-shaped base Where a pipe-shaped base is used, a plurality of equiangularly arranged set screws extend through the base and frictionally abut the pole surface.
  • a collar band or set screws when either a collar band or set screws are used, wind action and the associated swaying at the pole causes the collar band or the set screws to work themselves into the pole, which results in an undesirable wobble or play between the lamp and the pole.
  • no practical and economical means have been found to effectively prevent these effects. Consequently it is an object of the present invention to provide a fastening between the pole and the encircling pipe-shaped base that avoids the disadvantages of prior fastening means without incurring excessive cost.
  • the present invention overcomes the above mentioned disadvantages of prior fastening devices by providing the reinforcement with a layer of flexible wire cloth in the region where the base encircles the pole.
  • the flexible wire cloth layer is especially suited for use in a reinforcement such as that described in our copending U.S. patent application Ser. No. 229,409, filed on Jan. 29, 1981, now U.S. Pat. No. 4,383,965 entitled "Centrifugal Process For The Production Of A Pipe-shaped Body And A Pipe-shaped Body Produced According To The Centrifugal Process," the disclosure of which is hereby incorporated herein by reference.
  • the special reinforcement disclosed therein insures that the inner layer of fibers will not penetrate to the surface, but rather will stay well within the pole wall.
  • the resin sprayed into the rotating mold penetrates the reinforcement, and particularly its outer resin penetrable mat layer, such that the mat floats on the resin due to the lower specific gravity of the resin. If a woven wire cloth is embedded in this reinforcement, it also will float with the mat, and will stay well within the pole wall.
  • the synthetic resin hardens, the woven wire cloth serves as a substantially impenetrable reinforcement for the pole.
  • the collar band or set screws are tightened, they penetrate only the outermost surface layer of the hardened synthetic resin and then strike the woven wire, where they not only encounter solid resistance, but also find a sort of anchoring.
  • the woven wire cloth prevents the collar band or set screws from working themselves any further into the pole and wobbling or play between the lamp and the pole is eliminated.
  • the length of the woven wire cloth is slightly less then the circumference of the outside surface of the pole at its top end such that the ends of the cloth just meet in its floated position.
  • the wire preferably consists of strong, rust-proof metal such as stainless steel. The rust-proof property is especially important because the cloth may be exposed to some rainwater and air when the collar band or set screws abut the cloth.
  • FIG. 1 is an illustration of a pole supporting a lamp according to the present invention
  • FIG. 2 is a partial cross-sectional view of the top end of the pole and the lamp shown in FIG. 1 taken in a plane including the longitudinal axis of the pole;
  • FIG. 3 is an enlarged view of the area designated by Roman numeral III in FIG. 2;
  • FIG. 4 is a frontal view of the unrolled reinforcement with a partly rolled back layer to reveal the woven wire cloth according to the present invention.
  • a pole tapering conically from its base to its top end supports a lamp 4 having a pipe-shaped base or foot 5 which, as shown in FIG. 2, is mounted over and around the top end 6 of the pole.
  • the pole 3 comprises centrifugally cast synthetic resin having a reinforcement 7 embedded therein in such a manner that it does not protrude to the outer surface 18 of the pole, but rather is surrounded by synthetic resin.
  • the reinforcement 7 comprises an outer mat 8 penetrable by the synthetic resin and having a specific gravity slightly lower than the specific gravity of the synthetic resin. As shown in FIGS. 3 and 4, the mat 8 lies at the outside of the reinforcement and is covered by a fibrous layer 9 preferably comprised of mineral, or glass or similar fibers oriented in the direction of the longitudinal axis 10 of pole 3.
  • a woven wire cloth 11 is interposed or sandwiched between the mat 8 and the fibrous layers 9.
  • the breadth x of the cloth 11 approximates the length y by which the pipe-shaped foot 5 of the lamp 4 extends around the top end 6 of the pole 3.
  • the foot 5 is provided with a plurality of threaded holes 12 which for example are distributed in vertically disposed pairs equiangularly around the circumference thereof at 120° intervals.
  • a set screw 13 which, when tightened, penetrates the outer synthetic resin layer 14 of the pole 3. Upon further tightening, the set screw encounters the solid resistance of the wire cloth 11. Even swaying of the pole 3 will not cause the set screw to work into the pole wall beyond the wire cloth 11, so that play between the lamp 4 and the pole 3 is avoided.
  • the mat 8 may be fashioned of synthetic, textile or other natural fibers such as woodpulp, paper or similar materials.
  • a woven mat is especially preferred because such a structure possesses the needed permeability to the synthetic resin.
  • the mat may also comprise a perforated material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
  • Ropes Or Cables (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
  • Moulding By Coating Moulds (AREA)
US06/395,230 1980-08-29 1982-07-06 Centrifugally cast pole comprised of a reinforced resin for supporting a light or the like upon an end thereof Expired - Lifetime US4436781A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3032574 1980-08-29
DE19803032574 DE3032574A1 (de) 1980-08-29 1980-08-29 Im schleuderverfahren hergestellter mast aus armiertem kunstharz und auf den mastzopf aufgestuelpter leuchte o.dgl.

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06229410 Division 1981-01-29

Publications (1)

Publication Number Publication Date
US4436781A true US4436781A (en) 1984-03-13

Family

ID=6110675

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/395,230 Expired - Lifetime US4436781A (en) 1980-08-29 1982-07-06 Centrifugally cast pole comprised of a reinforced resin for supporting a light or the like upon an end thereof

Country Status (4)

Country Link
US (1) US4436781A (de)
EP (1) EP0047338B1 (de)
AT (1) ATE23127T1 (de)
DE (1) DE3032574A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6260314B1 (en) * 1999-11-08 2001-07-17 Faroex Ltd. Extension piece for a utility pole
US6367225B1 (en) 1999-07-26 2002-04-09 Wasatch Technologies Corporation Filament wound structural columns for light poles
US20070266662A1 (en) * 2006-05-16 2007-11-22 Arc Technologies, Llc Simulated stone or brick column and method of fabricating same
US20110030292A1 (en) * 2006-05-16 2011-02-10 Arc Technologies, Llc Simulated Stone or Brick Column and Method of Fabricating Same
US8302368B1 (en) * 2008-06-17 2012-11-06 Mcwane Global Interconnectable utility pole members

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2033849A1 (de) * 2007-08-30 2009-03-11 Peguform Gmbh Kunststoffformteil zur Aufnahme einer Fahrzeugbatterie

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1744870U (de) * 1956-11-26 1957-05-16 Appbau Geroh Inh Mauszewski Bo Antennenmast aus kunststoff.
FR1488735A (fr) * 1966-08-02 1967-07-13 Renforcement des pièces en résine synthétique
DE1926204A1 (de) * 1969-05-22 1970-11-26 Dynamit Nobel Ag Rotationsschmelzverfahren und damit hergestellte Formteile
US3696242A (en) * 1971-06-15 1972-10-03 Leon R Patry Connector for a post-mounted lighting fixture
DE2313122A1 (de) * 1973-03-16 1974-09-19 Pfleiderer Fa G A Verfahren zur herstellung von runden, vorzugsweise konischen rohren, insbesondere masten

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6367225B1 (en) 1999-07-26 2002-04-09 Wasatch Technologies Corporation Filament wound structural columns for light poles
US20040006947A1 (en) * 1999-07-26 2004-01-15 Clint Ashton Filament wound structural light poles
US6955024B2 (en) 1999-07-26 2005-10-18 North Pacific Group, Inc. Filament wound structural light poles
US6260314B1 (en) * 1999-11-08 2001-07-17 Faroex Ltd. Extension piece for a utility pole
US20070266662A1 (en) * 2006-05-16 2007-11-22 Arc Technologies, Llc Simulated stone or brick column and method of fabricating same
US20110030292A1 (en) * 2006-05-16 2011-02-10 Arc Technologies, Llc Simulated Stone or Brick Column and Method of Fabricating Same
US8302368B1 (en) * 2008-06-17 2012-11-06 Mcwane Global Interconnectable utility pole members

Also Published As

Publication number Publication date
EP0047338B1 (de) 1986-10-29
EP0047338A2 (de) 1982-03-17
DE3032574A1 (de) 1982-04-08
ATE23127T1 (de) 1986-11-15
EP0047338A3 (en) 1984-09-26
DE3032574C2 (de) 1991-01-03

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